광섬유 브라그 격자와 탭커플러를 사용한 DWDM 광가입자망용 저가형 광신호 삽입/추출 필터

Abstract

We constructed a nobel optical add/drop filter for DWDM optical access networks using the tap coupler and the fiber bragg grating. This device has unique features including much simpler structure and low implementation cost and appropriate characteristic. Experimental showed that 21dB and 4dB insertion loss at the drop and the output port, respectively. But the channel extinction ratios of this device showed appropriate characteristics of 15 and 26dB at the drop and the output port, respectively.